Search Results

You are looking at 1 - 10 of 3,993 items for :

  • Hurricanes/typhoons x
  • Refine by Access: All Content x
Clear All
Il-Ju Moon
,
Thomas R. Knutson
,
Hye-Ji Kim
,
Alexander V. Babanin
, and
Jin-Yong Jeong

; Lin et al. 2008 ; Shay et al. 2000 ; Wada and Usui 2007 ). In general, the higher the OHC, the stronger the TC can become; however, the relationship between TC intensity and OHC is complex when comparing individual TC cases quantitatively. For example, consider two recent TCs of record-breaking intensity in the western North Pacific (WNP) and the eastern North Pacific (ENP): Typhoon Haiyan in 2013 and Hurricane Patricia in 2015. Typhoon Haiyan—the strongest landfalling TC on record—killed at

Free access
Cheng-Ku Yu
and
Lin-Wen Cheng

b indicates that the mean RRT values for the SW (OR) typhoon calculated over the duration of the WSW flow was equal to approximately −0.75 (−0.35) at the lowest analysis level. The inflow angle derived from the mean RRT value was approximately 37° for the SW typhoon and approximately 19° for the OR typhoon. The calculated mean inflow angle of the SW typhoon was larger than the typical near-surface inflow angle of previously documented hurricanes over the open ocean (~23°; Powell et al. 2009

Full access
Christopher Velden
,
Timothy Olander
,
Derrick Herndon
, and
James P. Kossin

1. Introduction Tropical cyclones (TCs) are well known for their occasional devastating impacts on human life and property, as well as ecological zones. Also known over various parts of the global tropics as hurricanes, typhoons and cyclones (for the remainder of this paper, they will all be referred to as TCs), TCs only rarely reach their full intensity potential. However, when they do, TCs represent simultaneously one of nature’s most wondrous accomplishments and formidable threats. The quest

Full access
Zhumin Lu
,
Guihua Wang
, and
Xiaodong Shang

.1016/j.dsr.2005.10.002 . 10.1016/j.dsr.2005.10.002 Lu , Z. M. , and R. X. Huang , 2010 : The three-dimensional steady circulation in a homogenous ocean induced by a stationary hurricane . J. Phys. Oceanogr. , 40 , 1441 – 1457 , https://doi.org/10.1175/2010JPO4293.1 . 10.1175/2010JPO4293.1 Lu , Z. M. , G. Wang , and X. Shang , 2016 : Response of a preexisting cyclonic ocean eddy to a typhoon . J. Phys. Oceanogr. , 46 , 2403 – 2410 , https://doi.org/10.1175/JPO-D-16-0040.1 . 10

Full access
Eric W. Uhlhorn
,
Bradley W. Klotz
,
Tomislava Vukicevic
,
Paul D. Reasor
, and
Robert F. Rogers

et al. 2003 ; Powell et al. 2003 ; Kepert, 2006a , b ; Schwendike and Kepert 2008 ), but spatial resolution limitations from the individual point measurements often prevent a detailed description of the full wind field in most cases ( Landsea et al. 2004 ). Recently, observations of the TC surface wind field have become available from stepped-frequency microwave radiometers (SFMRs; Uhlhorn et al. 2007 ), now installed on all operational and research hurricane reconnaissance aircraft flying in

Full access
Jie Tang
,
Jun A. Zhang
,
Sim D. Aberson
,
Frank D. Marks
, and
Xiaotu Lei

. 3a). Of note, their momentum fluxes are nearly constant with height below 200 m, suggesting a surface-layer height of ~200 m over the open ocean in the hurricanes they studied (see their Fig. 6a). This result suggests that the slope change of S with height may be an indicator for detecting the top of the surface layer. In the typhoons we studied here, the surface-layer depth is thus close to 60 m based on the above hypothesis. Furthermore, similar to the behavior of the momentum flux, S is

Full access
Elizabeth A. Ritchie
,
Kimberly M. Wood
,
Oscar G. Rodríguez-Herrera
,
Miguel F. Piñeros
, and
J. Scott Tyo

, 27% are tropical storm intensity, 24% are typhoon intensity, and 2% are supertyphoon intensity. The eastern North Pacific study examines images with existing TCs from the 2005–11 hurricane seasons and comprises a total of 20 213 unique half-hourly images. The resulting dataset includes 21 major hurricanes, 25 hurricanes, and 44 tropical storms. The North Atlantic hurricane database (HURDAT) does not include systems that peaked below tropical storm (34 kt) intensity; thus, none of these cases was

Full access
Gordon J. Bell
and
Tsui Kar-sing

74 JOURNAL OF APPLIED METEOROLOGY VO~-UMEI2Some Typhoon Soundings and Their Comparison with Soundings in Hurricanes GORDON J. BELL AND TSUr KAR-SmG Ro~l~ Observatory, H ong(M~uu~pt recdved 23 ~une 1972, in re~ fo~ 5 ~ptem~r 1972)ABSTRACT Over 100 radiosonde soundings made within 185 km of the centers of typhoons are averaged in S-robclasses of sea-level pressure (SLP). The mean

Full access
Jung Hoon Shin

the region of PBL inflow is almost in agreement with the positive RAF. Because of RAF, the low-level outer tangential flow of the hurricane accelerates in the inflow region (i.e., frontal convective region), which extends intense tangential wind to the downstream side of the frontal convection. As a result, a local wind maximum not only occurs within the frontal area but also extends outside of the frontal region. A similar pattern has also been seen in the observational study of Typhoon Sinlaku

Free access
S. Yang
,
X. Zou
, and
P. S. Ray

MetOp-A and MetOp-B alleviates the significant reduction in COSMIC data because of the lack of reprocessed version 3 RO data during the typhoon and hurricane seasons of 2014 and 2015. Fig . 4. Annual variations in the number of TC cases in the TD (pink), TS (orange), and TY/HU (red) categories over (a) the western Pacific Ocean and (b) the Atlantic Ocean, as well as the number of RO profiles from COSMIC (black), MetOp-A (blue), and MetOp-B (green) from 2007 to 2015. The collocation criteria

Full access